EP0915687A4 - Anterior stabilization device - Google Patents

Anterior stabilization device

Info

Publication number
EP0915687A4
EP0915687A4 EP96944762A EP96944762A EP0915687A4 EP 0915687 A4 EP0915687 A4 EP 0915687A4 EP 96944762 A EP96944762 A EP 96944762A EP 96944762 A EP96944762 A EP 96944762A EP 0915687 A4 EP0915687 A4 EP 0915687A4
Authority
EP
European Patent Office
Prior art keywords
spacer
anterior
superior
inferior
stabilization device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP96944762A
Other languages
German (de)
French (fr)
Other versions
EP0915687A1 (en
Inventor
Robert S Bray Jr
Original Assignee
Robert S Bray Jr
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to US836595P priority Critical
Priority to US608365 priority
Application filed by Robert S Bray Jr filed Critical Robert S Bray Jr
Priority to PCT/US1996/019456 priority patent/WO1997020526A1/en
Publication of EP0915687A1 publication Critical patent/EP0915687A1/en
Publication of EP0915687A4 publication Critical patent/EP0915687A4/en
Application status is Withdrawn legal-status Critical

Links

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/44Joints for the spine, e.g. vertebrae, spinal discs
    • A61F2/442Intervertebral or spinal discs, e.g. resilient
    • AHUMAN NECESSITIES
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    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
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    • A61F2/30Joints
    • A61F2/44Joints for the spine, e.g. vertebrae, spinal discs
    • A61F2/4455Joints for the spine, e.g. vertebrae, spinal discs for the fusion of spinal bodies, e.g. intervertebral fusion of adjacent spinal bodies, e.g. fusion cages
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    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
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    • A61F2/46Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
    • A61F2/4603Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof
    • A61F2/4611Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof of spinal prostheses
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    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/70Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
    • A61B17/7059Cortical plates
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    • A61B17/58Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/84Fasteners therefor or fasteners being internal fixation devices
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    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02Prostheses implantable into the body
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    • A61F2002/30199Three-dimensional shapes
    • A61F2002/30224Three-dimensional shapes cylindrical
    • A61F2002/3023Three-dimensional shapes cylindrical wedge-shaped cylinders
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    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02Prostheses implantable into the body
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    • A61F2002/30001Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30329Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30476Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements locked by an additional locking mechanism
    • A61F2002/30507Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements locked by an additional locking mechanism using a threaded locking member, e.g. a locking screw or a set screw
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    • A61F2002/30576Special structural features of bone or joint prostheses not otherwise provided for with extending fixation tabs
    • A61F2002/30578Special structural features of bone or joint prostheses not otherwise provided for with extending fixation tabs having apertures, e.g. for receiving fixation screws
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    • A61F2310/00005The prosthesis being constructed from a particular material
    • A61F2310/00011Metals or alloys
    • A61F2310/00023Titanium or titanium-based alloys, e.g. Ti-Ni alloys

Abstract

An anterior fixation device (12) comprises an oval-shaped intervertebral spacer (13) and a retaining plate (17). The spacer (13) has a sidewall (11) and superior (25) and inferior walls (26). The superior (25) and inferior (26) walls are dome-shaped and porous to allow bone to grow through the device to achieve fusion of two adjacent vertebral bodies. Extending from the anterior side of the spacer are superior and inferior lips (14, 15) through which bone screws (16) extend. The bone screws (16) are non-weight bearing and screw into the strongest areas of bone within the vertebral bodies. The intervertebral spacer (13) is hollow inside to allow for bone grafts, bone morphogenic protein, or other bone stimulating substances to be inserted therein. The retaining plate (17) is attachable to the anterior surface of the spacer (13) to prevent the bone screws from backing out once the device is installed.

Description

ANTERIOR STABILIZATION DEVICE

Field of the Invention

The present invention relates to a device for stabilizing and/or fusing at least two adjacent vertebrae of a spine. More specifically, the present invention relates to a device that is placed on the anterior surface and in the intervertebral space of two adjacent vertebral bodies to thereby fix the spacial relationship of the vertebral bodies to achieve stabilization and/or bone fusion.

Background of the Invention

The spinal column of humans provides support to the body and protection to the delicate spinal cord and nerves. The spinal column comprises a series of vertebrae stacked on top of each other. Each vertebra has a relatively large vertebral body that is located in the anterior portion of the spine and provides the majority of the weight bearing support of the vertebral column. Each vertebral body has relatively strong bone comprising the outside surface of the body and weak bone comprising the center of the body. Situated between each vertebral body is an intervertebral disc that provides for cushioning and dampening of compressive forces to the sinal column. Located just posterior to the vertebral body and intervertebral disc is the vertebral canal containing the delicate sinal cord and nerves. Posterior to the spinal canal are the different articulating processes of the vertebra.

Various types of spinal column disorders are known and include scoliosis (abnormal lateral curvature of the spine), kyphosis (abnormal forward curvature of the spine, usually in the thoracic spine), excess lordosis (abnormal backward curvature of the spine, usually in the lumbar spine), spondylolisthesis (forward displacement of one vertebra over another, usually in the lumbar or cervical spine) and other disorders, such as ruptured or slipped discs, degenerative disc disease, fractured vertebra, and the like. Patients who suffer from such conditions usually experience extreme and debilitating pain and often neurologic deficit in nerve function.

A technique known as spinal fixation uses surgical implants which mechanically immobilize areas of the spine assisting in the eventual fusion of the treated adjacent vertebrae. Such techniques have been used effectively to treat the above described conditions and, in most cases, to relieve pain suffered by the patient. However, there are some disadvantages to the present fixation devices.

One technique for spinal fixation includes the immobilization of the spine by the use of spine rods that run generally parallel to the spine. In practicing this technique, the posterior surface of the spine is isolated and bone screws are first fastened to the pedicles of the appropriate vertebrae or to the sacrum and act as anchor points for the spine rods. The bone screws are generally placed two per vertebra, one at each pedicle on either side of the spinous process. Clamp assemblies join the spine rods to the screws. The spine rods are generally bent to achieve the desired curvature of the spinal column. These types of systems are very stable but require implanting screws into each vertebra over the area to be treated. Also, since the pedicles of vertebrae above the second lumbar vertebra (L2) are very small, only small bone screws can be used which sometimes do not give the needed support to stabilize the spine. To stabilize the implanted system sufficiently, one vertebra above and one vertebra below the area to be treated are often used for implanting pedicle screws. The rods and clamps are surgically fixed to the spine from a posterior approach.

Anterior fixation devices have also been used such as anterior plate systems. One type of anterior plate system involves a titanium plate with unicortical titanium bone screws that lock to the plate and are placed over the anterior surface of a vertebral body. Another type of anterior plate system used less frequently nowadays involves the use of bicortical screws that do not lock to the plate. The bone screws have to be long enough to bite into both sides of the vertebral body (cortex) to gain enough strength to obtain the needed stability. These devices are difficult to place due to the length of the screws and damage occurs when the screws are misplaced.

A third type of anterior fixation device comprises a hollow cylinder, usually a hollow cylindrical titanium cage, that is externally threaded. The externally threaded cage is screwed into place between to adjacent vertebrae. Bone grafts from cadavers or the pelvis are then packed into the hollow center of the device. Bone morphogenic protein (which is not yet commercially available) or other substances that promote bone growth can also be placed in the hollow center of the device. The cage is porous such that bone can grow through the device and fuse the two adjacent vertebrae. The are many disadvantages to this device. First, it is very difficult to align. Second, it requires drilling a large hole between two adjacent vertebral bodies and then threading the device into the hole. The large hole can compromise the integrity of the vertebral bodies, and if drilled too posteriorly, can injure the spinal cord. Third, the end plates of the vertebral bodies are usually destroyed during the drilling. The end plates comprise very hard bone and help to give the vertebral bodies needed strength. With the end plates destroyed, the cylindrical device is now harder than the bone of the vertebral bodies and the vertebral bodies tend to collapse, "telescope," together. The telescoping causes the length of the vertebral column to shorten and can cause damage to the spinal cord and nerves that pass between the two adjacent vertebrae.

It is desirable to have a fixation device which not only eliminates the need to implant pedicle screws into the vertebrae but also which connects to the strong anterior vertebral bodies. The device should be easy to place and should prevent potentially damaging telescoping of adjacent vertebrae.

Summary of the Invention

The present invention provides an anterior stabilization device which provides fixation and stabilization at both the anterior margin of the vertebral body and in the anterior column. The device comprises a hollow, generally oval shaped spacer and a retaining plate. The spacer comprises a side wall and porous superior and inferior walls, which are preferably dome-shaped. Along the anterior side of the spacer there are provided at least one superior lip which extends upwardly, i.e., in a superior direction, from the side wall and at least one inferior lip extending downwardly, i.e. in an inferior direction from the side wall, each lip containing a screw hole for recurring a non-weight bearing bone screw. Preferably there are three lips, i.e., two inferior lips and one superior lip or two superior lips and a single inferior lip. In a preferred embodiment of the invention, the spacer comprises an anterior extension from which the superior and inferior lips extend.

Access means are provided for loading the interior of the spacer with bone graft, bone morphogenic protein or the like. One preferred access means comprises one or more openings in the side wall on the anterior side of the spacer. Another preferred access means comprises a removably attachable superior and/or inferior wall.

The retaining plate is fixedly attachable to the anterior side of the spacer by means of a set screw or the like. The retaining plate is configured such that, when attached, it covers at least a portion of the head of any bone screw which is positioned in the screw holes of the superior and inferior lips to thereby prevent the screw from backing out. The retaining plate may also cover some or all of any access opening in the side wall.

The device of the present invention may be used to stabilize any portion of the spine, e.g., cervical, thoracic or lumbar. The device is sized according to the particular intervertebral disk which it replaces. Generally the spacer will have a height of from about 7 to about 14 mm, a lateral width of from about 10 to about 32 mm and an anterior-posterior width of from about 10 to about 30 mm. Spacers designed for cervical and thoracic use will typically have a height of from about 7 to about 10 mm, a lateral width of from about 13 to about 17 mm and an anterior-posterior width of from about 10 to about 14 mm. Spacers designed for lumbar use typically have a height of from about 8 to about 14 mm, a lateral width of from about 26 to about 32 mm and an anterior-posterior width of from about 22 to about 30 mm. Brief Description of the Drawings

Embodiments of the invention will now be described with reference to the following drawings which:

FIG. 1 is an anterior view of the lumbar spine with the present invention inserted between two adjacent vertebral bodies;

FIG. la is a superior view of a lumbar vertebra with the present invention placed over the vertebral body; FIG. lb is a superior view of a vertebral body;

FIG. lc is a lateral view of the lumbar spine with the present invention placed between two adjacent vertebral bodies;

FIG. 2 is an anterior view of a preferred anterior stabilization device made in accordance with the present invention; FIG. 3 is an exploded anterior view of the device of FIG. 2;

FIG. 4 is a lateral anterior view of an intervertebral spacer of the device of FIG. 1 ; FIG. 5 is a posterior view of an intervertebral spacer of the device of FIG. 1 ; FIG. 6 is a superior view of the intervertebral spacer of the device of FIG. 1 ; FIG. 7 is an inferior view of the intervertebral spacer of the device of FIG. 1 ; FIG. 8 is a superior view of a retaining plate of the device of FIG. 1 ;

FIG. 9 is an inferior view of a retaining plate of the device of FIG. 1 ; FIG. 10 is a lateral view of a lordotic vertebral spacer made in accordance with the present invention;

FIG. 11 is a lateral view of a kyphotic vertebral spacer made in accordance with the present invention;

FIG. 12 is a posterior view of a scoliotic spacer with a left to right angle; FIG. 13 is a posterior view of a scoliotic spacer with a right to left angle; FIG. 14 is an exploded perspective view of another preferred anterior stabilization device made in accordance with the present invention; FIG. 15 is an anterior side view of the device of FIG. 14;

FIG. 16 is an exploded perspective view of yet another preferred anterior stabilization device made in accordance with the present invention;

FIG. 17 is a lateral view of an intervertebral spacer connected to a stem and a handle; and FIG. 18 is a superior view of an intervertebral spacer connected to a stem and a handle. Detailed Description

The following is a list of definitions that apply to this application: Anterior — situated in front of or in the forward part of an organ or structure; pertaining to the front surface.

Inferior — situated below; directly downward; pertaining to the bottom surface; closest to the tail.

Lateral - denoting a position farther from the median plane or midline of the body or of a structure; pertaining to a side surface.

Posterior — situated in back of or in the backward part of an organ or structure; pertaining to the back surface.

Superior - situated above; directly upward; pertaining to the top surface; closest to the head. Turning in detail to the drawings where like reference numerals designate identical or corresponding parts throughout the several views and different embodiments, FIG. 1 illustrates an anterior view of two lumbar vertebrae with a preferred anterior fixation device 12 made in accordance with the present invention installed. The intervertebral disc that normally is between the two vertebrae has been replaced with the anterior fixation device. Besides the lumbar spine, the anterior fixation device can also be used in the cervical spine and the thoracic spine.

FIG. la is a superior view of the anterior fixation device 12 located on the superior surface of a lumbar vertebra. As illustrated in FIG. la, the anterior fixation device is primarily centered within the vertebral body, V.B., of the lumbar vertebra. The spinal cord, S.C, is located posteriorly from the anterior fixation device. The spinous process, S.P., is the most posterior pat of the vertebra. The mammillary processes, M.P., are lateral to the spinous process and the transverse processes, T.P., are located on the lateral sides of the vertebra.

FIG. lb is a cross section of a vertebral body illustrating the relative strengths of the bone within the vertebral body. The vertebral body is essentially oval shaped. The anterior surface, A, and the posterior surface, P, are indicated. In the center of the vertebral body is a generally weak area of bone that comprises mostly cancellous bone. A ring shaped area surrounding the weakest area of the bone comprises stronger cortical bone. The outermost ring of the vertebral body comprises annular apophyses, the strongest bone. As will be detailed below, the anterior fixation device is shaped to utilize the stronger areas of the vertebral body for support. Additionally, relatively short bone screws are placed through the device and into the bone of the annular apophyses and the cortical bone to secure the device in place to fix the relative position of the two adjacent vertebrae.

FIG. lc is a lateral view of the lumbar spine with the anterior fixation device 12 inserted in a vertebral disc space. The anterior fixation device is anchored into place by relatively short bone screws 16 on the anterior surface of two adjacent vertebral bodies. The length of the bone screws being from 1/4 to 1/2 of the anterior-posterior dimension of the vertebral body. The bone screws 16 are placed at an angle relative to the horizontal midline plane of the anterior fixation device. The angle of placement is about 15° to about 20o from the horizontal plane. As will be described later, the angled placement of the bone screws provides the surgeon placing the device in a patient one access point from which to screw the bone screws in place.

The complete anterior fixation device 12 is better illustrated in FIGS. 2 and 3. The anterior fixation device comprises an intervertebral spacer 13 (also referred to herein simply as a spacer )having a generally vertical side wall 1 1 which has a generally oval cross sectional shape, a generally dome-shaped porous superior wall 25 with tapered sections 27 about its periphery, a generally dome-shaped inferior porous wall 26 with tapered sections 28 around its periphery, a superior lip 14 and two inferior lips 15. Each lip 14 and 15 has a screw hole 19 through which a bone screw 16 may pass. A retaining plate 17 is attached to the spacer 13 by a set screw 18.

The intervertebral spacer 13 can be made out of any suitable material that is well known in the art. Preferably, the spacer will be made out of titanium or an alloy of titanium.

The spacer is a hollow structure with walls that are preferably about 1 to 2 mm thick. As can be seen in FIG. 3, the side wall of the spacer 13 has access openings 20 on both sides of a threaded set screw aperture 21. The openings 20 allow access into the interior of the hollow spacer. On the superior lip 14 and inferior lips 15 are screw holes 19 that bone screws 16 can be inserted through and into the annular apophysis and cortical bone of a vertebral body. The bone screws can be made out of any suitable material that is well known in the art. Preferably, the bone screws will be made out of the same material as the spacer, which in the preferred embodiment is titanium or an alloy of titanium. In the preferred embodiment, the bone screws are round head screws that may be screwed into the bone of the vertebral bodies with a flat head screwdriver. Other types of bone screws can also be used.

Referring to FIGS. 6 and 7, the intervertebral spacer 13 is essentially oval in shape with the anterior portion of the oval having an extension 39 to allow for the spacer to be anchored over anterior annular apophyses of two adjacent vertebral bodies. The anterior edge of the extension 39 has a curved superior lip 14 that has a screw hole 19 sized such that a bone screw can be inserted therethrough. As illustrated in FIGS. 4 and 6, the superior lip 14 is curved posteriorly for placement over an annular apophysis of a vertebral body. The superior wall is preferably porous, i.e., comprises pores or holes, to allow for bone to grow through the pores or holes to fuse the two vertebra together. As illustrated, the superior surface could be made porous by drilling a plurality of holes 40 through the surface. Additionally, a porous material such as Hydracell supplied by Danek Medical, Inc. can be used.

Referring now to FIGS. 4, 5 and 7, the inferior wall 26 is illustrated with inferior lips 15 and screw holes 19 therethrough. As with the superior lip 14, the inferior lips 15 are curved posteriorly such that the inferior lips 15 can be anchored to a vertebral body annular apophysis. The inferior wall is a mirror image of the superior wall and is preferably also made porous. In the preferred embodiment, holes 40 are drilled through the surface.

In the preferred embodiment there are three lips, one superior and two inferior, that form a triangle shape and provide three points of fixation to the vertebral bodies. The triangulation provides an additional benefit in that the spacers can easily stack on top of each other such that a series of adjacent vertebrae can be fixed together using the spacers of the present invention. As would be appreciated by a person skilled in the art, four or more points of fixation to the vertebral bodies could also be used.

In FIG. 4, the midline 29 of the larger diameter of the oval part of the spacer 13 is illustrated. In use, the midline 29 is along the midline of the larger diameter of two adjacent oval shaped vertebral bodies. As can be seen in FIGS. 4 and 5, the superior wall 25 has tapered surfaces 27 about its outer periphery and the inferior wall 26 has tapered surfaces 28 about its outer periphery. As will be discussed below, the tapered superior and inferior surfaces allows the surgeon easier placement during a surgical procedure. Additionally, the tapered surfaces provide greater stability of the device once installed. In an alternate embodiment, the superior and inferior walls have lateral ridges (not shown) spanning across the anterior half of the oval shaped spacer. The lateral ridges provide resistance against the device slipping forward after the surgical installation of the spacer.

Referring now to FIGS. 3, 8 and 9, a retaining plate 17 is illustrated. The retaining plate can be made from any suitable material well known in the art. Preferably, the retaining plate will be made out of the same material as the intervertebral spacer, which in the preferred embodiment is titanium or a titanium alloy. The retaining plate is curved to fit the curvature of the anterior surface of the intervertebral spacer 13. In the center of the retaining plate is a tapered aperture 39 that is sized to allow a set screw 18 to be inserted therethrough with the head of the set screw retained in the tapered aperture. The retaining plate has a superior retaining lip 22 and two inferior retaining lips 23. When the retaining plate 17 is in place on the intervertebral disc spacer 13, the superior retaining lip 22 partially covers the head of a bone screw extending through the superior lip of the intervertebral spacer and the inferior retaining lips 23 partially cover the heads of bone screws extending through the inferior lips of the intervertebral spacer. As illustrated in FIGS. 8 and 9, the posterior surface of the retaining plate has two rectangular shaped flanges 24. The flanges are located laterally with respect to the tapered set screw aperture 38. The flanges extend outward from the posterior surface of the retaining plate 1 to 2 mm. The rectangular shaped flanges are sized to matingly fit into the rectangular access openings 20 of the intervertebral spacer when the retaining plate is in place. Thus, as illustrated in FIG. 2, when the retaining plate 17 is secured to the spacer with the set screw 18 screwed into the threaded aperture 21 of the spacer, the bone screws 16 cannot back out from the spacer. The set screw 18 is secured to the spacer and is tightened accordingly to prevent loosening. The set screw is preferably any suitable material well known in the art, preferably titanium or a titanium alloy. In the preferred embodiment, the set screw is an hexagonal set screw that is placed with an hexagonal driver. Other types of set screws can be used.

As would be appreciated by a person skilled in the art, the shape and size of the opening 20 in the spacer may vary. If other shapes or sizes are used, then varying sized and shaped retaining plates would also be used.

The dimensions of the intervertebral spacer vary depending on the intended use of the spacers, having small spacers for the cervical spine, medium spacer for the thoracic spine, and large spacers for the lumbar spine. For the cervical and thoracic spine, spacers having a range of heights of about 7, 8, 9, or 10 mm are preferred. The lateral side to side dimensions of the largest lateral diameter of the spacers are preferably about 13, 15 and 17 mm. The anterior-posterior dimension of the cervical and thoracic spacers are preferably about 10, 12 and 14 mm. The spacers in the lumbar spine also have varying dimensions. The heights of the lumbar spacers are preferably about 8, 10, 12, and 14 mm. The lateral dimensions of the lumbar spacers are preferably about 26, 28, 30, and 32 mm. The anterior-posterior dimensions of the lumbar spacers are preferably about 22, 24, 26, 28, and 30 mm. The retaining plates would be sized appropriately to fit the varying heights and lateral dimensions of the varying sized spacers.

FIG. 10 illustrates an alternative embodiment to the present invention. A spacer 30 with a lordotic angle, a, is illustrated. The lordotic angle extends from a smaller posterior surface, P, to a larger anterior surface, A. The angle, a, can range from about 1 ° to about 45 °. Similar reference numerals are used to indicate the superior wall 25 with tapered sections 27, the inferior wall 26 with tapered sections 28, the superior lip 14 and inferior lip

15.

FIG. 1 1 illustrates a kyphotic spacer 31. In this embodiment the kyphotic spacer has a superior wall 25, and inferior wall 26, a superior tapered section 27 and inferior tapered section 28, an additional superior tapered section 34 and inferior tapered section 35 on the anterior surface of the spacer. The kyphotic spacer has a kyphotic angle, b, from a smaller anterior surface, A, to a larger posterior surface, P, the kyphotic angle ranging from about 1 ° to about 45 °. Additionally illustrated on the anterior surface is an optional smaller kyphotic angle, b'. The angle b' represents the kyphotic angle of the anterior extension 39 of the spacer. The kyphotic angle b' will be from about 1 ° to about 10° less than the kyphotic angle b. FIG. 12 is a posterior view of a scoliotic intervertebral spacer 32. In this particular embodiment the scoliotic angle, c, is from a smaller left lateral side to a larger right lateral side. Angle c range from about 1 ° to about 45 °. The retaining plate would also be appropriately angled.

FIG. 13 is a posterior view of a scoliotic spacer with a scoliotic angle, d, from a smaller right lateral surface to a larger left lateral surface. Angle d ranges from about 1 ° to about 45 °. The retaining plate would also be appropriately angled.

FIGS. 14 and 15 show an alternate embodiment of the invention wherein the screw holes 19 in the superior and inferior lips 14 and 15 are located in recesses 40. The retaining plate 17 comprises superior and inferior retaining lips 22 and 23 which have the same shape as and nest in the recesses of the lips 14 and 15 when the retaining plate is installed.

FIG. 16 shows yet another embodiment of the invention. In this embodiment, the superior wall 25 is removable. This allows the hollow interior of the spacer to be packed with bone grafts, bone moφhogenic protein or the like before insertion of the spacer into the intervertebral disk space. The top plate is fixedly attachable to the rest of the spacer by means of a set screw (now shown) which extends through the superior wall 25 through screw hole 42 into a threaded post 43. It is understood that the inferior wall may be removable instead of or in addition to the top wall. Alternatively, only a portion of the superior and/or inferior wall may be removable. Further, a removable superior and/or inferior wall may replace access openings 20 or may be present in addition to access openings 20. The present invention is designed to be manufactured as a kit with multiple sized spacers and retaining plates present in the kit as well as multiple lordotic, kyphotic and scoliotic spacers. Thus, a surgeon who is performing an anterior fixation surgery can isolate the anterior spine using well known surgical techniques and place an appropriate sized and shaped spacer from the kit into the intervertebral space of two adjacent vertebrae. If the spacer used is too large, too small, or the wrong shape that spacer can be removed and replaced with a spacer of a more appropriate size and shape.

FIGS. 17 and 18 illustrate a specialized tool, a "spacer sizer," used for appropriate sizing of the intervertebral spacer. An intervertebral spacer 38 is fixedly attached to a stem 36 which is attached to a handle 37 of the spacer sizer. The stem extends from the center of the anterior surface of the spacer. Alternatively, a placement tool with a handle 37 and a threaded end extending from the stem 36 that can be threaded into the threaded set screw aperture 21 of the intervertebral spacer is provided. The stem 36 would be of sufficient length to allow the surgeon easy placement into the intervertebral disk space of the spine. In the surgical kit described above, there would be included a set of spacer sizers corresponding to the different shaped and sized spacers. Alternatively, the kit would include the threaded placement tool to be threaded into different sized and shaped spacers for surgical placement. The following is a description of the use of the anterior fixation device of the present invention. A patient needing spinal fixation or fusion would be prepped appropriately for anterior spine surgery. The surgeon would then use standard anterior surgical approaches to isolate two or more vertebral bodies to be treated. The intervertebral disc would then be removed and a curette or similar surgical instrument would prepare the vertebral body end plates for receiving the anterior fixation device. The end plates would be lightly scraped or drilled, with the majority of the scraping occurring in the center of the vertebral body end plate. The end plate scrapings generate a tapered pocket for placement of the tapered anterior fixation device. The tapering helps to ensure proper placement of the anterior fixation device and helps to maintain the device in place.

Once a tapered pocket has been created, the surgeon then selects a spacer sizer as illustrated in FIGS. 14 and 15 to size the pocket and to select the appropriately sized spacer. With the spacer sizer in place in the pocket between two adjacent vertebrae, the surgeon would take appropriate X-rays to check the size of the spacer and the pocket and its location. If a larger, smaller or different shaped spacer is needed, the surgeon would remove the spacer sizer and replace it with a more appropriate spacer sizer until a proper size is confirmed by X-ray. In the alternative, the surgeon would thread a spacer onto the threaded stem of the placement tool and then place that spacer into the pocket with the tool attached. The shape and size of the spacer would then be confirmed with X-ray. If a different spacer is needed, the tool is removed with the spacer attached, the spacer is then unscrewed from the handle and replaced with a different spacer. Once confirmation of the shape and size occurs using X-ray, the surgeon then unscrews the tool from the spacer leaving the spacer in the pocket between the adjacent vertebrae.

The surgeon next secures the spacer to the adjacent vertebrae using the bone screws. As indicated above, the bone screws are preferably angled away from the horizontal plane of the spacer. Thus, all three bone screws can be driven into the annular apophyses and cortical bone of the vertebral bodies using one axial access point. The use of only one access point is advantages, especially in the cervical spine, where there is limited maneuvering room. The interior of the spacer is then filled with bone grafts, bone moφhogenic protein, or the like, using the anterior openings to the spacer. The retaining plate is then placed over the anterior spacer openings and the set screw is then driven into place to secure the retaining plate to the spacer. Alternatively, if the superior and/or inferior wall is removable, the spacer is filled with bone grafts, bone moφhogenic protein or the like before placement of the spacer in the intervertebral disk space.

If three or more adjacent vertebrae are to be treated, the surgeon would remove the next intervertebral disc and then repeat the above procedure to surgically place another anterior fixation device. As can be appreciated, the spacers are designed to stack one on top of the other such that the entire spine could be fixed. The singular superior lip of a spacer attached to the inferior annular apophysis of a vertebral body fits between the two inferior lips of another spacer attached to the superior annular apophysis of the same vertebral body. Once the spinal column has been appropriately treated, the surgeon then finishes the anterior surgery using well known surgical techniques.

The anterior stabilization device of the present invention provides a number of unique advantages. The device provides stability by fixation both in the anterior column by means of the bone screws at the anterior margin of the vertebral body and in the intervertebral disk space by means of the spacer and subsequently by means of fusion. Conventional anterior plates fix only at the anterior portion of the vertebral body. Conventional cages provide only stabilization in the intervertebral disk area.

In conventional anterior plates, rigidity is derived either from biocortical purchase of bone or by locking the screw head to the plate. This creates a rigid box-like structure which can prevent desirable weight bearing on bone grafts in the intervertebral disk space which, in turn, may prevent fusion. The present invention overcomes this potential disadvantage. In the present design, the bone screws are non-weight bearing. Due to the presence of the retaining plate, the bone screws are allowed to toggle within the screw holes of the spacer without worry of backout. Hence, the present design allows non-weight bearing screws to maintain positional fixation at the anterior margin while at the same time allows weight bearing support onto the intradiscal portion of the device.

The presence and design of the retaining plate contributes to the unique advantages of the present invention. Conventional devices that lock screws in place are designed to be weight bearing and to provide a rigid structure. With such designs, there is a risk of screw breakage, screw backout and, as described above, bone fusion failure. By means of the design described herein, the bone screws do not create a rigid structure and are non-weight bearing, thereby eliminating the risk of breakage. Moreover, by use of a retaining plate as described herein, risk of screw backout is eliminated. Another advantage of the present design is that the bone screws are anchored in the hardest portions of the vertebra, thereby providing the greatest structural support. Conventional anterior plates place long bone screws into the mid body area of the vertebra which provides less overall structural support.

Thus, an anterior fixation device is disclosed which allows the surgeon to spatially fix two or more adjacent vertebral bodies together at both the anterior margin and the intervertebral disk portions of the vertebral body. The device uses relatively small, non- weight bearing bone screws that cannot extend into the spinal canal. The device is easy to place and prevents potentially damaging telescoping of the fixed vertebral bodies.

While embodiments and applications of this invention have been shown and described, it would be apparent to those skilled in the art that many more modifications are possible without departing from the inventive concepts herein. The invention, therefore, is not to be restricted except in the spirit of the appended claims.

Claims

WHAT IS CLAIMED IS:
1. An anterior stabilization device comprising: a generally hollow intervertebral spacer having anterior and posterior sides and comprising: a side wall having a generally oval cross-sectional shape; a porous superior wall; a porous inferior wall; at least one superior lip extending upwardly above the side wall at the anterior side of the spacer; at least one inferior lip extending downwardly below the side wall at the inferior side of the spacer; a screw hole in each superior and inferior lip; and access means for allowing insertion of bone graft material into the hollow interior of the spacer; and a retaining plate fixedly attachable to the anterior side of the spacer, said retaining plate being sized to cover at least a portion of the head of each bone screw which is inserted through screw holes of each superior and inferior lip.
2. An anterior stabilization device as claimed in claim 1 wherein the spacer further comprises an anterior extension and wherein the superior and inferior lips extend upwardly and downwardly from the anterior extension.
3. An anterior stabilization device as claimed in claim 1 wherein each of the superior and inferior walls are dome-shaped.
4. An anterior stabilization device as claimed in claim 1 wherein the spacer has a height of from about 7 to about 14 mm.
5. An anterior stabilization device as claimed in claim 1 wherein the spacer has a lateral width of from about 13 to about 32 mm. 6. An anterior stabilization device as claimed in claim 1 wherein the spacer has an anterior-posterior width of from about 10 to about 30 mm.
7. An anterior stabilization device as claimed in claim 1 wherein the spacer comprises two inferior lips and one superior lip.
8. An anterior stabilization device as claimed in claim 1 wherein the access means comprises at least one opening in the side wall at the anterior side of the spacer.
9. An anterior stabilization device as claimed in claim 1 wherein the access means comprises a removably attachable superior wall.
10. An anterior stabilization device as claimed in claim 1 wherein the access means comprises a removably attachable inferior wall.
1 1. An anterior stabilization device as claimed in claim 1 wherein the spacer is sized to fit within the intervertebral disk space between two adjacent cervical vertebrae.
12. An anterior stabilization device as claimed in claim 1 wherein the spacer is sized to fit within the intervertebral disk space between two adjacent thoracic vertebrae.
13. An anterior stabilization device as claimed in claim 1 wherein the spacer is sized to fit with the intervertebral disk space between two adjacent lumbar vertebrae.
EP96944762A 1995-12-08 1996-12-06 Anterior stabilization device Withdrawn EP0915687A4 (en)

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US836595P true 1995-12-08 1995-12-08
US608365 1995-12-08
PCT/US1996/019456 WO1997020526A1 (en) 1995-12-08 1996-12-06 Anterior stabilization device

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EP0915687A1 EP0915687A1 (en) 1999-05-19
EP0915687A4 true EP0915687A4 (en) 1999-11-10

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AU (1) AU705598B2 (en)
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Families Citing this family (300)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5609635A (en) 1988-06-28 1997-03-11 Michelson; Gary K. Lordotic interbody spinal fusion implants
US6066175A (en) * 1993-02-16 2000-05-23 Henderson; Fraser C. Fusion stabilization chamber
US6206922B1 (en) * 1995-03-27 2001-03-27 Sdgi Holdings, Inc. Methods and instruments for interbody fusion
US6139550A (en) * 1997-02-11 2000-10-31 Michelson; Gary K. Skeletal plating system
AT395001T (en) * 1997-02-11 2008-05-15 Warsaw Orthopedic Inc screw plate for the front cervical spine fixation system for a
EP2308426A1 (en) * 1997-04-25 2011-04-13 Stryker France Intersomatic implants in two parts
GB9713330D0 (en) * 1997-06-25 1997-08-27 Bridport Gundry Plc Surgical implant
US5824094A (en) 1997-10-17 1998-10-20 Acromed Corporation Spinal disc
DE19818143A1 (en) * 1998-04-23 1999-10-28 Medinorm Ag Device for connecting vertebrae of the spine
US6241769B1 (en) * 1998-05-06 2001-06-05 Cortek, Inc. Implant for spinal fusion
US6682561B2 (en) 1998-06-18 2004-01-27 Pioneer Laboratories, Inc. Spinal fixation system
WO1999065412A1 (en) * 1998-06-18 1999-12-23 Pioneer Laboratories, Inc. Spinal fixation system
US6086593A (en) * 1998-06-30 2000-07-11 Bonutti; Peter M. Method and apparatus for use in operating on a bone
US7087082B2 (en) 1998-08-03 2006-08-08 Synthes (Usa) Bone implants with central chambers
US6099531A (en) * 1998-08-20 2000-08-08 Bonutti; Peter M. Changing relationship between bones
FR2784291B1 (en) * 1998-10-09 2001-03-09 Dimso Sa intervertebral disk prosthesis has high resistance
US7691814B2 (en) * 2003-03-24 2010-04-06 Emory University Osteogenic compositions comprising an amino acid sequence capable of being phosphorylated by CAMK2
US6342074B1 (en) 1999-04-30 2002-01-29 Nathan S. Simpson Anterior lumbar interbody fusion implant and method for fusing adjacent vertebrae
AU4988700A (en) 1999-05-05 2000-11-17 Gary K. Michelson Spinal fusion implants with opposed locking screws
US6964686B2 (en) 1999-05-17 2005-11-15 Vanderbilt University Intervertebral disc replacement prosthesis
US7331994B2 (en) 1999-05-17 2008-02-19 Vanderbilt University Intervertebral disc replacement prosthesis
US6203546B1 (en) 1999-07-27 2001-03-20 Macmahon Edward B Method and apparatus for medial tibial osteotomy
FR2799116B1 (en) * 1999-09-30 2002-03-01 Euros Sa intervertebral implant
US6436101B1 (en) * 1999-10-13 2002-08-20 James S. Hamada Rasp for use in spine surgery
US6461359B1 (en) 1999-11-10 2002-10-08 Clifford Tribus Spine stabilization device
US6432106B1 (en) * 1999-11-24 2002-08-13 Depuy Acromed, Inc. Anterior lumbar interbody fusion cage with locking plate
US20030191474A1 (en) * 2000-02-16 2003-10-09 Cragg Andrew H. Apparatus for performing a discectomy through a trans-sacral axial bore within the vertebrae of the spine
US6575979B1 (en) 2000-02-16 2003-06-10 Axiamed, Inc. Method and apparatus for providing posterior or anterior trans-sacral access to spinal vertebrae
US6899716B2 (en) * 2000-02-16 2005-05-31 Trans1, Inc. Method and apparatus for spinal augmentation
ES2308014T5 (en) * 2000-02-16 2012-03-16 Trans1, Inc. Apparatus for distraction and spinal fusion
US7727263B2 (en) * 2000-02-16 2010-06-01 Trans1, Inc. Articulating spinal implant
US6558386B1 (en) * 2000-02-16 2003-05-06 Trans1 Inc. Axial spinal implant and method and apparatus for implanting an axial spinal implant within the vertebrae of the spine
US7641657B2 (en) * 2003-06-10 2010-01-05 Trans1, Inc. Method and apparatus for providing posterior or anterior trans-sacral access to spinal vertebrae
US6740090B1 (en) * 2000-02-16 2004-05-25 Trans1 Inc. Methods and apparatus for forming shaped axial bores through spinal vertebrae
US6558390B2 (en) 2000-02-16 2003-05-06 Axiamed, Inc. Methods and apparatus for performing therapeutic procedures in the spine
FR2805457B1 (en) * 2000-02-24 2002-10-11 Stryker Spine Sa Intervertebral implant body and a support surface
US6296665B1 (en) 2000-03-20 2001-10-02 Electro-Biology, Inc. Method and apparatus for spinal fixation
AU4936701A (en) * 2000-03-22 2001-10-03 Boyer Michael L Ii Skeletal reconstruction cages
FR2808995B1 (en) 2000-05-18 2003-02-21 Aesculap Sa The intersomatic cage has unified grafts
USD494274S1 (en) 2000-06-12 2004-08-10 Ortho Development Corporation Implant
US6579318B2 (en) * 2000-06-12 2003-06-17 Ortho Development Corporation Intervertebral spacer
WO2002003885A2 (en) * 2000-07-10 2002-01-17 Michelson Gary K Flanged interbody spinal fusion implants
US6468309B1 (en) 2000-10-05 2002-10-22 Cleveland Clinic Foundation Method and apparatus for stabilizing adjacent bones
US6544265B2 (en) 2000-11-08 2003-04-08 The Cleveland Clinic Foundation Apparatus for implantation into bone related applications
US6953462B2 (en) * 2000-10-05 2005-10-11 The Cleveland Clinic Foundation Apparatus for implantation into bone
US6551319B2 (en) 2000-11-08 2003-04-22 The Cleveland Clinic Foundation Apparatus for implantation into bone
EP1326560B1 (en) * 2000-10-11 2005-05-25 Michael D. Mason Graftless spinal fusion device
US6740088B1 (en) 2000-10-25 2004-05-25 Sdgi Holdings, Inc. Anterior lumbar plate and method
US6579319B2 (en) * 2000-11-29 2003-06-17 Medicinelodge, Inc. Facet joint replacement
US20050080486A1 (en) * 2000-11-29 2005-04-14 Fallin T. Wade Facet joint replacement
US20020169507A1 (en) 2000-12-14 2002-11-14 David Malone Interbody spine fusion cage
US6623509B2 (en) 2000-12-14 2003-09-23 Core Medical, Inc. Apparatus and methods for sealing vascular punctures
US6890343B2 (en) * 2000-12-14 2005-05-10 Ensure Medical, Inc. Plug with detachable guidewire element and methods for use
US6846319B2 (en) * 2000-12-14 2005-01-25 Core Medical, Inc. Devices for sealing openings through tissue and apparatus and methods for delivering them
US8083768B2 (en) * 2000-12-14 2011-12-27 Ensure Medical, Inc. Vascular plug having composite construction
US6896692B2 (en) 2000-12-14 2005-05-24 Ensure Medical, Inc. Plug with collet and apparatus and method for delivering such plugs
US6743257B2 (en) 2000-12-19 2004-06-01 Cortek, Inc. Dynamic implanted intervertebral spacer
US7169182B2 (en) * 2001-07-16 2007-01-30 Spinecore, Inc. Implanting an artificial intervertebral disc
US7713302B2 (en) * 2001-10-01 2010-05-11 Spinecore, Inc. Intervertebral spacer device utilizing a spirally slotted belleville washer having radially spaced concentric grooves
US7771477B2 (en) 2001-10-01 2010-08-10 Spinecore, Inc. Intervertebral spacer device utilizing a belleville washer having radially spaced concentric grooves
US6776800B2 (en) 2001-02-28 2004-08-17 Synthes (U.S.A.) Implants formed with demineralized bone
US7090698B2 (en) 2001-03-02 2006-08-15 Facet Solutions Method and apparatus for spine joint replacement
DE10116412C1 (en) 2001-04-02 2003-01-16 Ulrich Gmbh & Co Kg Implant for insertion between vertebral bodies of the spine
CA2443001A1 (en) * 2001-04-04 2002-10-17 Lawrence G. Rapp Interbody spinal fusion device
US20040083002A1 (en) * 2001-04-06 2004-04-29 Belef William Martin Methods for treating spinal discs
US7695521B2 (en) 2001-05-01 2010-04-13 Amedica Corporation Hip prosthesis with monoblock ceramic acetabular cup
WO2002087475A1 (en) * 2001-05-01 2002-11-07 Amedica Corporation Radiolucent bone graft
US20050177238A1 (en) * 2001-05-01 2005-08-11 Khandkar Ashok C. Radiolucent bone graft
US7776085B2 (en) * 2001-05-01 2010-08-17 Amedica Corporation Knee prosthesis with ceramic tibial component
WO2002102275A2 (en) * 2001-06-14 2002-12-27 Amedica Corporation Metal-ceramic composite articulation
US7833245B2 (en) * 2001-07-12 2010-11-16 Osteotech, Inc. Intervertebral implant with movement resistant structure
FR2827156B1 (en) * 2001-07-13 2003-11-14 Ldr Medical A spinal cage modular fixture with
US6607559B2 (en) * 2001-07-16 2003-08-19 Spine Care, Inc. Trial intervertebral distraction spacers
US6736815B2 (en) * 2001-09-06 2004-05-18 Core Medical, Inc. Apparatus and methods for treating spinal discs
FR2829689B1 (en) * 2001-09-14 2004-06-25 Frederic Fortin Nucleus prosthesis and the insertion device and process for its implementation
US6673113B2 (en) * 2001-10-18 2004-01-06 Spinecore, Inc. Intervertebral spacer device having arch shaped spring elements
US9480503B2 (en) 2002-01-03 2016-11-01 Rohit Khanna Universal laminoplasty implant
US20030125738A1 (en) 2002-01-03 2003-07-03 Khanna Rohit Kumar Laminoplasty with laminar stabilization method and system
US6740118B2 (en) * 2002-01-09 2004-05-25 Sdgi Holdings, Inc. Intervertebral prosthetic joint
US7011684B2 (en) * 2002-01-17 2006-03-14 Concept Matrix, Llc Intervertebral disk prosthesis
AR038680A1 (en) * 2002-02-19 2005-01-26 Synthes Ag intervertebral implant
RU2303422C2 (en) * 2002-03-12 2007-07-27 Сервитек Инк. Intervertebral prosthesis and system of intervertebral prostheses, in peculiar case, for cervical department of vertebral column
EP1344507A1 (en) 2002-03-12 2003-09-17 Waldemar Link (GmbH & Co.) Intervertebral prosthesis for the cervical spine
ES2286171T3 (en) 2002-03-12 2007-12-01 Cervitech, Inc. Prostheses Intervertebral, especially for the cervical spine.
FR2837094B1 (en) * 2002-03-15 2004-11-26 Fixano intervertebral implant
US7309358B2 (en) * 2002-03-21 2007-12-18 Warsaw Orthopedic, Inc. Vertebral body and disc space replacement devices
US20080027548A9 (en) * 2002-04-12 2008-01-31 Ferree Bret A Spacerless artificial disc replacements
US8038713B2 (en) 2002-04-23 2011-10-18 Spinecore, Inc. Two-component artificial disc replacements
US20060106462A1 (en) * 2002-04-16 2006-05-18 Tsou Paul M Implant material for minimally invasive spinal interbody fusion surgery
US6706068B2 (en) 2002-04-23 2004-03-16 Bret A. Ferree Artificial disc replacements with natural kinematics
US8388684B2 (en) * 2002-05-23 2013-03-05 Pioneer Signal Technology, Inc. Artificial disc device
US7001433B2 (en) * 2002-05-23 2006-02-21 Pioneer Laboratories, Inc. Artificial intervertebral disc device
US6793678B2 (en) 2002-06-27 2004-09-21 Depuy Acromed, Inc. Prosthetic intervertebral motion disc having dampening
EP1542626B1 (en) 2002-08-15 2012-09-26 Synthes GmbH Controlled artificial intervertebral disc implant
CA2495404C (en) * 2002-08-15 2011-05-03 Justin K. Coppes Intervertebral disc implant
US7682392B2 (en) 2002-10-30 2010-03-23 Depuy Spine, Inc. Regenerative implants for stabilizing the spine and devices for attachment of said implants
US20040093087A1 (en) * 2002-11-05 2004-05-13 Ferree Bret A. Fluid-filled artificial disc replacement (ADR)
US7320708B1 (en) 2002-11-13 2008-01-22 Sdgi Holdings, Inc. Cervical interbody device
US20040210310A1 (en) * 2002-12-10 2004-10-21 Trieu Hai H. Implant system and method for intervertebral disc augmentation
AU2003297195A1 (en) * 2002-12-17 2004-07-22 Amedica Corporation Total disc implant
JP4977323B2 (en) 2003-02-06 2012-07-18 ジンテーズ ゲゼルシャフト ミト ベシュレンクテル ハフツング Intervertebral implant
US20060015182A1 (en) * 2003-02-25 2006-01-19 Tsou Paul M Patch material for intervertebral disc annulus defect repair
WO2004080333A2 (en) * 2003-03-06 2004-09-23 Spinecore, Inc. Instrumentation and methods for use in implanting a cervical disc replacement device
US6908484B2 (en) 2003-03-06 2005-06-21 Spinecore, Inc. Cervical disc replacement
US7112222B2 (en) 2003-03-31 2006-09-26 Depuy Spine, Inc. Anterior lumbar interbody fusion cage with locking plate
US7819903B2 (en) 2003-03-31 2010-10-26 Depuy Spine, Inc. Spinal fixation plate
US7377930B2 (en) * 2003-04-02 2008-05-27 Frank Loughran Nerve protecting tube
AU2004228904A1 (en) * 2003-04-07 2004-10-21 Cervitech, Inc. Prosthetic joint of cervical intervertebral for a cervical spine
US8012212B2 (en) 2003-04-07 2011-09-06 Nuvasive, Inc. Cervical intervertebral disk prosthesis
US7985255B2 (en) 2003-04-21 2011-07-26 Rsb Spine Llc Implant subsidence control
US8100976B2 (en) 2003-04-21 2012-01-24 Rsb Spine Llc Implant subsidence control
US20170020683A1 (en) * 2003-04-21 2017-01-26 Rsb Spine Llc Bone plate stabilization system and method for its use
US8613772B2 (en) 2003-04-21 2013-12-24 Rsb Spine Llc Lateral mount implant device
US6984234B2 (en) 2003-04-21 2006-01-10 Rsb Spine Llc Bone plate stabilization system and method for its use
US9278009B2 (en) 2003-04-21 2016-03-08 Rsb Spine Llc Spine implants
US9078706B2 (en) 2003-09-30 2015-07-14 X-Spine Systems, Inc. Intervertebral fusion device utilizing multiple mobile uniaxial and bidirectional screw interface plates
US8852229B2 (en) * 2003-10-17 2014-10-07 Cordis Corporation Locator and closure device and method of use
US7361183B2 (en) 2003-10-17 2008-04-22 Ensure Medical, Inc. Locator and delivery device and method of use
WO2005041793A2 (en) * 2003-10-23 2005-05-12 Trans1, Inc. Spinal mobility preservation apparatus and method
EP1691848B1 (en) 2003-10-23 2012-08-22 TRANS1, Inc. Tools and tool kits for performing minimally invasive procedures on the spine
GB0325421D0 (en) * 2003-10-30 2003-12-03 Gill Steven S An intervertebral prosthesis
US7837732B2 (en) * 2003-11-20 2010-11-23 Warsaw Orthopedic, Inc. Intervertebral body fusion cage with keels and implantation methods
US20050149192A1 (en) * 2003-11-20 2005-07-07 St. Francis Medical Technologies, Inc. Intervertebral body fusion cage with keels and implantation method
US20050283237A1 (en) * 2003-11-24 2005-12-22 St. Francis Medical Technologies, Inc. Artificial spinal disk replacement device with staggered vertebral body attachments
US8562649B2 (en) 2004-02-17 2013-10-22 Gmedelaware 2 Llc System and method for multiple level facet joint arthroplasty and fusion
US7588578B2 (en) * 2004-06-02 2009-09-15 Facet Solutions, Inc Surgical measurement systems and methods
US8419770B2 (en) 2003-12-10 2013-04-16 Gmedelaware 2 Llc Spinal facet implants with mating articulating bearing surface and methods of use
US8480742B2 (en) * 2005-08-02 2013-07-09 Perumala Corporation Total artificial disc
US7967823B2 (en) * 2005-01-31 2011-06-28 Arthrex, Inc. Method and apparatus for performing an open wedge, high tibial osteotomy
US8211112B2 (en) * 2005-01-31 2012-07-03 Arthrex, Inc. Multi-part implant for open wedge knee osteotomies
US8771279B2 (en) 2005-01-31 2014-07-08 Arthrex, Inc. Method and apparatus for performing an osteotomy in bone
US7935119B2 (en) 2005-01-31 2011-05-03 Ibalance Medical, Inc. Method for performing an open wedge, high tibial osteotomy
US8083746B2 (en) * 2004-05-07 2011-12-27 Arthrex, Inc. Open wedge osteotomy system and surgical method
US8540777B2 (en) * 2005-01-31 2013-09-24 Arthrex, Inc. Method and apparatus for performing an open wedge, high tibial osteotomy
US8062301B2 (en) * 2005-01-31 2011-11-22 Arthrex, Inc. Method and apparatus for performing a high tibial, dome osteotomy
US8906026B2 (en) 2005-01-31 2014-12-09 Arthrex, Inc. Method and apparatus for performing an open wedge, high tibial osteotomy
US8888785B2 (en) 2005-01-31 2014-11-18 Arthrex, Inc. Method and apparatus for performing an open wedge, high tibial osteotomy
US20060041313A1 (en) * 2004-08-19 2006-02-23 Sdgi Holdings, Inc. Intervertebral disc system
WO2006042484A1 (en) * 2004-10-18 2006-04-27 Buettner-Janz Karin Bent sliding core as part of an intervertebral disk endoprosthesis
WO2006066228A2 (en) * 2004-12-16 2006-06-22 Innovative Spinal Technologies Expandable implants for spinal disc replacement
EP1681039A1 (en) * 2005-01-17 2006-07-19 Cervitech, Inc. Pair of intervertebral implants
WO2008019049A2 (en) * 2006-08-03 2008-02-14 Ibalance Medical Inc. Method and apparatus for performing an open wedge, high tibial osteotomy
AU2006213882A1 (en) * 2005-02-08 2006-08-17 Ibalance Medical, Inc. Method and apparatus for forming a wedge-like opening in a bone for an open wedge osteotomy
US8333789B2 (en) * 2007-01-10 2012-12-18 Gmedelaware 2 Llc Facet joint replacement
US7993373B2 (en) * 2005-02-22 2011-08-09 Hoy Robert W Polyaxial orthopedic fastening apparatus
US7722647B1 (en) 2005-03-14 2010-05-25 Facet Solutions, Inc. Apparatus and method for posterior vertebral stabilization
US20060235409A1 (en) 2005-03-17 2006-10-19 Jason Blain Flanged interbody fusion device
US8764801B2 (en) * 2005-03-28 2014-07-01 Gmedelaware 2 Llc Facet joint implant crosslinking apparatus and method
EP1871253B1 (en) * 2005-04-08 2015-09-16 Paradigm Spine, LLC Interspinous vertebral and lumbosacral stabilization devices
US9848993B2 (en) 2005-04-12 2017-12-26 Nathan C. Moskowitz Zero-profile expandable intervertebral spacer devices for distraction and spinal fusion and a universal tool for their placement and expansion
US9814601B2 (en) 2005-04-12 2017-11-14 Nathan C. Moskowitz Bi-directional fixating/locking transvertebral body screw/intervertebral cage stand-alone constructs
US7846188B2 (en) 2005-04-12 2010-12-07 Moskowitz Nathan C Bi-directional fixating transvertebral body screws, zero-profile horizontal intervertebral miniplates, total intervertebral body fusion devices, and posterior motion-calibrating interarticulating joint stapling device for spinal fusion
US7942903B2 (en) 2005-04-12 2011-05-17 Moskowitz Ahmnon D Bi-directional fixating transvertebral body screws and posterior cervical and lumbar interarticulating joint calibrated stapling devices for spinal fusion
US9888918B2 (en) * 2005-04-12 2018-02-13 Nathan C. Moskowitz Horizontal-transvertebral curvilinear nail-screws with inter-locking rigid or jointed flexible rods for spinal fusion
US7972363B2 (en) * 2005-04-12 2011-07-05 Moskowitz Ahmnon D Bi-directional fixating/locking transvertebral body screw/intervertebral cage stand-alone constructs and posterior cervical and lumbar interarticulating joint stapling guns and devices for spinal fusion
US9532821B2 (en) 2005-04-12 2017-01-03 Nathan C. Moskowitz Bi-directional fixating/locking transvertebral body screw/intervertebral cage stand-alone constructs with vertical hemi-bracket screw locking mechanism
US9675385B2 (en) 2005-04-12 2017-06-13 Nathan C. Moskowitz Spinous process staple with interdigitating-interlocking hemi-spacers for adjacent spinous process separation and distraction
US9744052B2 (en) 2005-04-12 2017-08-29 Nathan C. Moskowitz Bi-directional fixating/locking transvertebral body screw/intervertebral cage stand-alone constructs
US7727233B2 (en) * 2005-04-29 2010-06-01 Warsaw Orthopedic, Inc. Spinous process stabilization devices and methods
US8088144B2 (en) * 2005-05-04 2012-01-03 Ensure Medical, Inc. Locator and closure device and method of use
US8926654B2 (en) 2005-05-04 2015-01-06 Cordis Corporation Locator and closure device and method of use
US8777959B2 (en) 2005-05-27 2014-07-15 Spinecore, Inc. Intervertebral disc and insertion methods therefor
EP1912578B1 (en) 2005-07-28 2018-02-07 NuVasive, Inc. Total disc replacement system
US20070032873A1 (en) * 2005-08-02 2007-02-08 Perumala Corporation Total artificial intervertebral disc
FR2891135B1 (en) 2005-09-23 2008-09-12 Ldr Medical Sarl Prothese of intervertebral disc
US7887595B1 (en) 2005-12-05 2011-02-15 Nuvasive, Inc. Methods and apparatus for spinal fusion
WO2007130699A2 (en) * 2006-01-13 2007-11-15 Clifford Tribus Spine reduction and stabilization device
FR2897259B1 (en) * 2006-02-15 2008-05-09 Ldr Medical Soc Par Actions Si Transforaminal interbody fusion cage has intervetebrale graft and implanting tool of the cage
US8252058B2 (en) * 2006-02-16 2012-08-28 Amedica Corporation Spinal implant with elliptical articulatory interface
US20070198093A1 (en) * 2006-02-17 2007-08-23 Amedica Corporation Spinal implant with offset keels
EP1988855A2 (en) * 2006-02-27 2008-11-12 Synthes GmbH Intervertebral implant with fixation geometry
US20070225806A1 (en) * 2006-03-24 2007-09-27 Sdgi Holdings, Inc. Arthroplasty device
US7850736B2 (en) * 2006-04-13 2010-12-14 Warsaw Orthopedic, Inc. Vertebral fusion implants and methods of use
US7815681B2 (en) 2006-04-28 2010-10-19 Warsaw Orthopedic, Inc. Orthopedic support locating or centering feature and method
US7658766B2 (en) * 2006-05-01 2010-02-09 Warsaw Orthopedic, Inc. Intervertebral implants with covered inner chamber and methods of use
US20070255414A1 (en) * 2006-05-01 2007-11-01 Sdgi Holdings, Inc. Intervertebral implants with one or more covers and methods of use
US10143560B2 (en) 2006-06-08 2018-12-04 Francis Pflum Sac for use in spinal surgery
US8226722B2 (en) * 2006-06-08 2012-07-24 Francis Pflum Sac for use in spinal surgery
US8114162B1 (en) 2006-08-09 2012-02-14 Nuvasive, Inc. Spinal fusion implant and related methods
US8100975B2 (en) * 2006-08-11 2012-01-24 Warsaw Orthopedic, Inc. Intervertebral implants with attachable flanges and methods of use
US8506636B2 (en) 2006-09-08 2013-08-13 Theken Spine, Llc Offset radius lordosis
WO2008034135A2 (en) 2006-09-15 2008-03-20 Pioneer Surgical Technology, Inc. Joint arthroplasty devices having articulating members
US8715350B2 (en) 2006-09-15 2014-05-06 Pioneer Surgical Technology, Inc. Systems and methods for securing an implant in intervertebral space
US20080077150A1 (en) * 2006-09-22 2008-03-27 Linh Nguyen Steerable rasp/trial member inserter and method of use
USD708747S1 (en) 2006-09-25 2014-07-08 Nuvasive, Inc. Spinal fusion implant
EP2086434B1 (en) 2006-09-27 2016-03-23 Arthrex, Inc. Apparatus for performing an open wedge, high tibial osteotomy
US20080161927A1 (en) * 2006-10-18 2008-07-03 Warsaw Orthopedic, Inc. Intervertebral Implant with Porous Portions
US9539101B2 (en) * 2010-02-03 2017-01-10 Globus Medical, Inc. Device for stabilizing a vertebral joint and method for anterior insertion thereof
EP2099394B1 (en) 2006-11-22 2015-07-01 Arthrex, Inc. Osteotomy implant for disposition in a wedge-shaped osteotomy opening
US20080208197A1 (en) * 2006-11-30 2008-08-28 Kelly Ammann Method and apparatus for performing an open wedge, high tibial osteotomy
US8083749B2 (en) * 2006-12-01 2011-12-27 Arthrex, Inc. Method and apparatus for performing an open wedge, low femoral osteotomy
US9039768B2 (en) 2006-12-22 2015-05-26 Medos International Sarl Composite vertebral spacers and instrument
JP2010515543A (en) * 2007-01-10 2010-05-13 ファセット ソリューションズ インコーポレイテッド Taper lock fixed system
US7942104B2 (en) 2007-01-22 2011-05-17 Nuvasive, Inc. 3-dimensional embroidery structures via tension shaping
US7946236B2 (en) 2007-01-31 2011-05-24 Nuvasive, Inc. Using zigzags to create three-dimensional embroidered structures
US8425607B2 (en) * 2007-04-03 2013-04-23 Warsaw Orthopedic, Inc. Anchor member locking features
US20080249569A1 (en) * 2007-04-03 2008-10-09 Warsaw Orthopedic, Inc. Implant Face Plates
US8268000B2 (en) * 2007-04-03 2012-09-18 Warsaw Orthopedic, Inc. Composite interbody spacer
US8480715B2 (en) * 2007-05-22 2013-07-09 Zimmer Spine, Inc. Spinal implant system and method
FR2916956B1 (en) 2007-06-08 2012-12-14 Ldr Medical The intersomatic cage, intervertebral prosthesis, the anchoring device and implant instrumentation
US8900307B2 (en) * 2007-06-26 2014-12-02 DePuy Synthes Products, LLC Highly lordosed fusion cage
US8282681B2 (en) 2007-08-13 2012-10-09 Nuvasive, Inc. Bioresorbable spinal implant and related methods
US8852280B2 (en) * 2007-09-27 2014-10-07 Warsaw Orthopedic, Inc. Intervertebral implant
US8882813B2 (en) * 2007-10-19 2014-11-11 Spinesmith Partners, L.P. Locking mechanisms and associated methods
US20090112325A1 (en) * 2007-10-30 2009-04-30 Biospine, Llc Footplate member and a method for use in a vertebral body replacement device
US8182537B2 (en) * 2007-10-30 2012-05-22 Aesculap Implant Systems, Llc Vertebral body replacement device and method for use to maintain a space between two vertebral bodies within a spine
US8591587B2 (en) 2007-10-30 2013-11-26 Aesculap Implant Systems, Llc Vertebral body replacement device and method for use to maintain a space between two vertebral bodies within a spine
CA2705684A1 (en) * 2007-11-16 2009-05-22 Synthes Usa, Llc Low profile intervertebral implant
US20090177203A1 (en) * 2008-01-04 2009-07-09 Inbone Technologies, Inc. Devices, systems and methods for re-alignment of bone
WO2009091615A2 (en) 2008-01-18 2009-07-23 Spinecore, Inc. Instruments and methods for inserting artificial intervertebral implants
US20090248092A1 (en) 2008-03-26 2009-10-01 Jonathan Bellas Posterior Intervertebral Disc Inserter and Expansion Techniques
US8333804B1 (en) * 2008-03-27 2012-12-18 Spinelogik, Inc. Intervertebral fusion device and method of use
US8377135B1 (en) 2008-03-31 2013-02-19 Nuvasive, Inc. Textile-based surgical implant and related methods
US8328872B2 (en) 2008-09-02 2012-12-11 Globus Medical, Inc. Intervertebral fusion implant
US8142441B2 (en) * 2008-10-16 2012-03-27 Aesculap Implant Systems, Llc Surgical instrument and method of use for inserting an implant between two bones
US20100145460A1 (en) 2008-11-07 2010-06-10 Mcdonough William P Zero-profile interbody spacer and coupled plate assembly
US10045860B2 (en) * 2008-12-19 2018-08-14 Amicus Design Group, Llc Interbody vertebral prosthetic device with self-deploying screws
US8968405B2 (en) * 2009-01-20 2015-03-03 Incite Innovation Llc Interbody fusion device and method of operation
US8157865B2 (en) * 2009-01-22 2012-04-17 Stephen Hochschuler Apparatus and method for stabilizing adjacent bone portions
US8142435B2 (en) 2009-02-19 2012-03-27 Aesculap Implant Systems, Llc Multi-functional surgical instrument and method of use for inserting an implant between two bones
US20100241231A1 (en) * 2009-02-20 2010-09-23 Marino James F Intervertebral fixation device
US8187329B2 (en) * 2009-02-20 2012-05-29 Spartan Cage Holding, Llc Interbody fusion system with intervertebral implant retention assembly
CN102438556B (en) 2009-02-25 2015-05-27 斯伯威丁股份公司 Spine stabilization device, and method and kit for its implantation
BRPI1008924A2 (en) 2009-03-16 2017-06-06 Synthes Gmbh system and method for stabilizing vertebrae in spinal surgery through a lateral access channel
US9220547B2 (en) * 2009-03-27 2015-12-29 Spinal Elements, Inc. Flanged interbody fusion device
US9526620B2 (en) 2009-03-30 2016-12-27 DePuy Synthes Products, Inc. Zero profile spinal fusion cage
US8641766B2 (en) 2009-04-15 2014-02-04 DePuy Synthes Products, LLC Arcuate fixation member
CN102368976A (en) 2009-04-15 2012-03-07 斯恩蒂斯有限公司 Vertebral implant system for a flexible interbody spacer
US9408715B2 (en) 2009-04-15 2016-08-09 DePuy Synthes Products, Inc. Arcuate fixation member
US8709083B2 (en) 2009-06-04 2014-04-29 William E. Duffield Intervertebral fusion implant
US9730804B2 (en) 2009-09-06 2017-08-15 Warsaw Orthopedic, Inc. Locking spinal fusion device
EP2477579B1 (en) 2009-09-17 2015-12-23 LDR Holding Corporation Intervertebral implant having extendable bone fixation members
US9028553B2 (en) 2009-11-05 2015-05-12 DePuy Synthes Products, Inc. Self-pivoting spinal implant and associated instrumentation
US9066815B2 (en) * 2009-11-09 2015-06-30 Centinel Spine, Inc. Spinal implant with attachment system
US8840668B1 (en) 2009-11-11 2014-09-23 Nuvasive, Inc. Spinal implants, instruments and related methods
AU2009357504A1 (en) 2009-12-31 2012-07-12 Ldr Medical Anchoring device, intervertebral implant and implantation instrument
CA2793185C (en) * 2010-03-16 2019-02-12 Pinnacle Spine Group, Llc Intervertebral implants and graft delivery systems and methods
US9155631B2 (en) 2010-04-08 2015-10-13 Globus Medical Inc. Intervertbral implant
US8377139B2 (en) 2010-06-17 2013-02-19 Aesculap Implant Systems, Llc Standalone interbody fusion device with locking and release mechanism
US8480747B2 (en) 2010-08-11 2013-07-09 Warsaw Orthopedic, Inc. Interbody spinal implants with extravertebral support plates
US8956415B2 (en) 2010-08-15 2015-02-17 Warsaw Orthopedic, Inc. Vertebral implant
US20120065734A1 (en) * 2010-09-15 2012-03-15 Spinal USA LLC Intervertebral plate system
US20120123544A1 (en) * 2010-11-16 2012-05-17 Sean Suh Intervertebral Spacer and Method of Installation Thereof
US8617240B2 (en) * 2010-11-17 2013-12-31 Charles D. Hightower Moldable cushion for implants
EP2654626B1 (en) 2010-12-21 2016-02-24 Synthes GmbH Intervertebral implants and systems
US9241809B2 (en) 2010-12-21 2016-01-26 DePuy Synthes Products, Inc. Intervertebral implants, systems, and methods of use
US8454694B2 (en) 2011-03-03 2013-06-04 Warsaw Orthopedic, Inc. Interbody device and plate for spinal stabilization and instruments for positioning same
US9017412B2 (en) 2011-04-29 2015-04-28 Life Spine, Inc. Spinal interbody implant with bone screw retention
US9381048B2 (en) 2011-08-31 2016-07-05 DePuy Synthes Products, Inc. Devices and methods for cervical lateral fixation
US9820864B2 (en) * 2011-09-01 2017-11-21 In Queue Innovations, Llc Disc replacement device and method of use
US9427330B2 (en) * 2011-09-06 2016-08-30 Globus Medical, Inc. Spinal plate
US9539109B2 (en) 2011-09-16 2017-01-10 Globus Medical, Inc. Low profile plate
US9681959B2 (en) 2011-09-16 2017-06-20 Globus Medical, Inc. Low profile plate
US9237957B2 (en) 2011-09-16 2016-01-19 Globus Medical, Inc. Low profile plate
US9848994B2 (en) 2011-09-16 2017-12-26 Globus Medical, Inc. Low profile plate
US9248028B2 (en) 2011-09-16 2016-02-02 DePuy Synthes Products, Inc. Removable, bone-securing cover plate for intervertebral fusion cage
CN102319129B (en) * 2011-10-24 2015-05-20 北京爱康宜诚医疗器材股份有限公司 Fusion prosthesis
US9017410B2 (en) * 2011-10-26 2015-04-28 Globus Medical, Inc. Artificial discs
US8460388B2 (en) 2011-10-28 2013-06-11 Incite Innovation Llc Spinal interbody device
US9380932B1 (en) 2011-11-02 2016-07-05 Pinnacle Spine Group, Llc Retractor devices for minimally invasive access to the spine
US9198769B2 (en) 2011-12-23 2015-12-01 Pioneer Surgical Technology, Inc. Bone anchor assembly, bone plate system, and method
CN102429747A (en) * 2011-12-28 2012-05-02 北京爱康宜诚医疗器材股份有限公司 Atlas fusion prosthesis
FR2987256B1 (en) 2012-02-24 2014-08-08 Ldr Medical An anchoring device for intervertebral implant, intervertebral implant and implant instrumentation
US9271836B2 (en) 2012-03-06 2016-03-01 DePuy Synthes Products, Inc. Nubbed plate
JP5913727B2 (en) 2012-03-19 2016-04-27 アミカス デザイン グループ、エルエルシー Interbody spinal prosthetic shaping fixing device using a self-extracting anchor
US9566165B2 (en) 2012-03-19 2017-02-14 Amicus Design Group, Llc Interbody vertebral prosthetic and orthopedic fusion device with self-deploying anchors
US9615934B2 (en) * 2012-04-06 2017-04-11 Sanjay K. KHURANA Protective cover for interbody fusion devices
WO2014018098A1 (en) 2012-07-26 2014-01-30 DePuy Synthes Products, LLC Expandable implant
US8814912B2 (en) 2012-07-27 2014-08-26 Zimmer Spine, Inc. Bone stabilization member with bone screw retention mechanism
US9326861B2 (en) 2012-08-03 2016-05-03 Globus Medical, Inc. Stabilizing joints
US10182921B2 (en) 2012-11-09 2019-01-22 DePuy Synthes Products, Inc. Interbody device with opening to allow packing graft and other biologics
US10022245B2 (en) 2012-12-17 2018-07-17 DePuy Synthes Products, Inc. Polyaxial articulating instrument
US10105239B2 (en) 2013-02-14 2018-10-23 Globus Medical, Inc. Devices and methods for correcting vertebral misalignment
US9585765B2 (en) 2013-02-14 2017-03-07 Globus Medical, Inc Devices and methods for correcting vertebral misalignment
US10117754B2 (en) 2013-02-25 2018-11-06 Globus Medical, Inc. Expandable intervertebral implant
US9149365B2 (en) 2013-03-05 2015-10-06 Globus Medical, Inc. Low profile plate
WO2014159225A2 (en) 2013-03-14 2014-10-02 Baxano Surgical, Inc. Spinal implants and implantation system
US10070970B2 (en) 2013-03-14 2018-09-11 Pinnacle Spine Group, Llc Interbody implants and graft delivery systems
US9186258B2 (en) 2013-03-15 2015-11-17 Globus Medical, Inc. Expandable intervertebral implant
US9149367B2 (en) 2013-03-15 2015-10-06 Globus Medical Inc Expandable intervertebral implant
US9474622B2 (en) 2013-03-15 2016-10-25 Globus Medical, Inc Expandable intervertebral implant
US9034045B2 (en) 2013-03-15 2015-05-19 Globus Medical, Inc Expandable intervertebral implant
US9233009B2 (en) 2013-03-15 2016-01-12 Globus Medical, Inc. Expandable intervertebral implant
US9539103B2 (en) 2013-03-15 2017-01-10 Globus Medical, Inc. Expandable intervertebral implant
US9456906B2 (en) 2013-03-15 2016-10-04 Globus Medical, Inc. Expandable intervertebral implant
US9572677B2 (en) 2013-03-15 2017-02-21 Globus Medical, Inc. Expandable intervertebral implant
US9427325B2 (en) * 2013-07-26 2016-08-30 Warsaw Orthopedic, Inc. Interbody implant and method
USD745159S1 (en) 2013-10-10 2015-12-08 Nuvasive, Inc. Intervertebral implant
US9889014B2 (en) 2014-02-06 2018-02-13 Life Spine, Inc. Implant for bone fixation
US9877759B2 (en) 2014-02-06 2018-01-30 Life Spine, Inc. Foot implant for bone fixation
WO2015157554A1 (en) * 2014-04-09 2015-10-15 Ackerman Matthew Implantable bone grafting devices, systems, and methods
US9545320B2 (en) 2014-05-15 2017-01-17 Globus Medical, Inc. Standalone interbody implants
US9486327B2 (en) 2014-05-15 2016-11-08 Globus Medical, Inc. Standalone interbody implants
US9675465B2 (en) 2014-05-15 2017-06-13 Globus Medical, Inc. Standalone interbody implants
US9968461B2 (en) 2014-05-15 2018-05-15 Globus Medical, Inc. Standalone interbody implants
US9867718B2 (en) 2014-10-22 2018-01-16 DePuy Synthes Products, Inc. Intervertebral implants, systems, and methods of use
US9987052B2 (en) 2015-02-24 2018-06-05 X-Spine Systems, Inc. Modular interspinous fixation system with threaded component
US20170049579A1 (en) * 2015-08-19 2017-02-23 Raymond J. Quinlan Spinal Fusion Device And Method Of Using Same
US10034768B2 (en) 2015-09-02 2018-07-31 Globus Medical, Inc. Implantable systems, devices and related methods
FR3050927A1 (en) * 2016-05-03 2017-11-10 Ldr Medical Implant and insert vertebral implant for vertebral

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3426364A (en) * 1966-08-25 1969-02-11 Colorado State Univ Research F Prosthetic appliance for replacing one or more natural vertebrae
FR2570594B1 (en) * 1984-09-26 1989-02-24 Kehr Pierre Spinal prosthesis, particularly for cervical vertebrae
US4599086A (en) * 1985-06-07 1986-07-08 Doty James R Spine stabilization device and method
CH672589A5 (en) * 1987-07-09 1989-12-15 Sulzer Ag
CH672588A5 (en) * 1987-07-09 1989-12-15 Sulzer Ag
GB8718627D0 (en) * 1987-08-06 1987-09-09 Showell A W Sugicraft Ltd Spinal implants
CA1333209C (en) * 1988-06-28 1994-11-29 Gary Karlin Michelson Artificial spinal fusion implants
US4892545A (en) * 1988-07-14 1990-01-09 Ohio Medical Instrument Company, Inc. Vertebral lock
US5458638A (en) * 1989-07-06 1995-10-17 Spine-Tech, Inc. Non-threaded spinal implant
US5123926A (en) * 1991-02-22 1992-06-23 Madhavan Pisharodi Artificial spinal prosthesis
US5458641A (en) * 1993-09-08 1995-10-17 Ramirez Jimenez; Juan J. Vertebral body prosthesis
US5397364A (en) * 1993-10-12 1995-03-14 Danek Medical, Inc. Anterior interbody fusion device
FR2727005B1 (en) * 1994-11-18 1997-04-18 Euros Sa A anterior stabilization of the cervical spine

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
No further relevant documents disclosed *
See also references of WO9720526A1 *

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CA2242645A1 (en) 1997-06-12
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AU1330197A (en) 1997-06-27
AU705598B2 (en) 1999-05-27
WO1997020526A1 (en) 1997-06-12

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